11465761809 has 16 divisors (see below), whose sum is σ = 16890740352. Its totient is φ = 6881411328.

The previous prime is 11465761781. The next prime is 11465761823. The reversal of 11465761809 is 90816756411.

It is a happy number.

It is not a de Polignac number, because 11465761809 - 2¹² = 11465757713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11465761859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4886194 + ... + 4888539.

It is an arithmetic number, because the mean of its divisors is an integer number (1055671272).

Almost surely, 2^11465761809 is an apocalyptic number.

It is an amenable number.

11465761809 is a deficient number, since it is larger than the sum of its proper divisors (5424978543).

11465761809 is a wasteful number, since it uses less digits than its factorization.

11465761809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9774776.

The product of its (nonzero) digits is 362880, while the sum is 48.

The spelling of 11465761809 in words is "eleven billion, four hundred sixty-five million, seven hundred sixty-one thousand, eight hundred nine".